Consistent dispersive optical-model analyses for n+{sup 209}Bi and n+{sup 208}Pb from -20 to +80 MeV

Journal Article · Thu Apr 01 04:00:00 EST 1993 · Bulletin of the American Physical Society

OSTI ID:243976

Weisel, G J; Tornow, W; Howell, C R ^[1]

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1. and others

Complementary databases were constructed from published and some new measurements of {sigma}({theta}), Ay({theta}) and {sigma}{sub T} for n+{sup 208}Pb and n+{sup 209}Bi covering the energy range 1.0 to 80 MeV. A dispersive optical-model analysis was performed for both scattering systems while constraining many of the parameters to be identical. A good representation of the data is obtained with conventional geometry and spin-orbit parameters. The {sup 208}Pb model predicts quite well measured energies of single-particle and single-hole bound states. Occupation probabilities are calculated. A fully constrained model is presented in which the only differences between the two systems are the Fermi energy and the usual isospin term. This latter model represents all the data well.

• DOE Contract Number: FG05-91ER40619
• OSTI ID: 243976
• Report Number(s): CONF-9304297--
• Journal Information: Bulletin of the American Physical Society, Journal Name: Bulletin of the American Physical Society Journal Issue: 2 Vol. 38; ISSN BAPSA6; ISSN 0003-0503
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
BISMUTH 209 TARGET
LEAD 208 TARGET
MEV RANGE 01-10
MEV RANGE 10-100
NEUTRON REACTIONS
OPTICAL MODELS
SCATTERING